Internal error – Storefront API (unstable)

Hydrogen and Storefront APIs
1

Hi,

I’m getting the following error when calling the customerEmailMarketingSubscribe mutation using the unstable version of the Storefront API:

[h2:error:storefront.mutation] Internal error. Looks like something went wrong on our end.

Request ID: 765033a9-7735-46fe-bd73-e036ebb43758-1750751830

Here is the mutation I’m sending:

mutation customerEmailMarketingSubscribe($email: String!) {
  customerEmailMarketingSubscribe(email: $email) {
    customerUserErrors {
      message
    }
  }
}

Could you please let me know what might be causing this and how to resolve it?

Thanks!

2

Have you confirmed the error doesn’t happen by using a stable version, most likely 2025-04.

3

This mutation is not available in stable versions unfortunately…